[MACH] Zynq - Use common crt/cpu init, and common boot code.
[ARCH] ARM - Added some macro's for DSB/DMB/ISB memory barriers on ARM.
[ARCH] ARM - Common boot code now uses the DSB/ISB memory barrier macros.
[ARCH] ARM - Use common CRT/CPU init for ARM builds.
[MACH] BCM2835 - Use common bootcode.
[ARCH] ARM - v7-MMU use ISB/DSB barrier macros.
[MACH] BCM2835 - Enable MMU support, and use common ARM boot code.
[ARCH] ARM - Kconfig - Define some ARM architecture version MACROs.